01 -
Preheat the oven to 400 degrees Fahrenheit.
02 -
In a medium bowl, combine the peaches, granulated sugar, brown sugar, cinnamon, nutmeg, lemon juice, and cornstarch. Mix until evenly coated.
03 -
Transfer the peach mixture into an 11-inch cast-iron skillet or baking dish.
04 -
In another medium bowl, combine the flour, sugars, baking powder, and salt. Mix well.
05 -
Add the cold butter cubes to the flour mixture. Use your fingers or a pastry cutter to blend until the mixture resembles wet sand.
06 -
Mix in the hot water just until the topping is combined. Avoid overmixing.
07 -
Spread the topping evenly over the peaches and sprinkle with the granulated sugar.
08 -
Place the skillet or baking dish on a larger baking tray to catch any spills. Bake for 30-35 minutes or until the top is golden brown.
09 -
Let cool slightly and serve with ice cream or whipped cream, if desired.